Response of Zeta Potential to the Fouling during Microfiltration of Surfactants

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The response of zeta potential,ζ<sub>obs</sub>, to membrane surface condition and surfactants in solution was investigated from the viewpoint of the interaction between surfactant and membrane surface. The ζ<sub>obs</sub> of three polyvinylidene difluoride (PVDF) microfiltration membranes, which had non-ionic hydrophilic, hydrophobic, and positively charged pore surfaces, with nominal pore size of 0.22 μm were measured over wide range of the surfactants concentration. N-Dodecyltrimethyl ammonium chloride (DTAC) and Sodium Dodecyl Sulfate (SDS) were used as cationic and anionic surfactants, respectively. At the lower surfactant concentration (the conductivity below 20mS/m) the behaviors of ζ<sub>obs</sub> mainly depended on the combination of membrane and surfactant used and they can be explained by the interaction between surfactant and pore surface. At the higher surfactant concentration the behaviors of ζ<sub>obs</sub> mainly depended on type of surfactant rather than on membrane used. In the case of SDS the severe flux decline was observed at a certain concentration in all the membranes and the absolute value of ζ<sub>obs</sub> decreased and approached to zero reflecting the flux decline.

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  • 膜 37(3), 152-158, 2012-05-01

    日本膜学会

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各種コード

  • NII論文ID(NAID)
    10030759506
  • NII書誌ID(NCID)
    AN0023215X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    03851036
  • NDL 記事登録ID
    023813266
  • NDL 請求記号
    Z18-1127
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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